NANOPARTICLE BASED PHOTODYNAMIC THERAPY AND METHODS OF MAKING AND USING SAME
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United States of America Patent
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app pub date -
Jun 2, 2011
filing date -
Feb 2, 2005
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Abstract
A novel method for cancer treatment that combines radiotherapy and photodynamic therapy (PDT). More particularly, luminescent nanoparticles with attached photosensitizers, such as porphyrins, are used as a new type of agent for photodynamic therapy. Upon exposure to ionizing radiation, light will emit from the nanoparticles to activate the photosensitizers; as a consequence, a singlet oxygen is produced to augment the killing of cancer cells by ionizing radiation. No external light is necessary to activate the photosensitizing agent within tumors. The combination of radiotherapy and PDT is more efficient than either used alone.
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